IDEAS home Printed from https://ideas.repec.org/a/spr/telsys/v88y2025i1d10.1007_s11235-024-01239-x.html
   My bibliography  Save this article

Physical layer security of multi-antenna relay assisted NOMA networks

Author

Listed:
  • Xinjie Wang

    (Qingdao University of Technology)

  • Min Zhang

    (Qingdao University of Technology)

  • Enyu Li

    (Qingdao University of Technology)

  • Guang Yang

    (Qingdao University of Technology)

  • Xuhu Wang

    (Qingdao University of Technology)

Abstract

In this paper, the secrecy performance of one multi-antenna relay assisted non-orthogonal multiple access (NOMA) network is investigated when the relay employs either amplify-and-forward (AF) protocol or decode-and-forward (DF) protocol respectively. Selection combination (SC) and transmitting antenna selection (TAS) schemes are employed at the multi-antenna relay for the network. The impact of outdated channel state information (CSI) for the antenna selection is also considered for the model. The exact and asymptotic expressions for secrecy outage probability (SOP) and strictly positive secrecy capacity (SPSC) are derived over Rayleigh fading channels, and these results are also validated by Monte Carlo Simulations. The results show that the network with AF or DF scheme has almost the same tight approximate theoretical secrecy performance although the exact SOP performance of DF scheme is slightly better than AF scheme as shown by the Monte Carlo simulation results. SOP tends towards the performance floor with constant value as revealed by the asymptotic analysis, which means that the diversity order of SOP is zero regardless of different antenna number and outdated/perfect CSI. But more antennas and less outdated CSI can improve the secrecy performance in the lower and medium SNR region, and they also affect the optimal NOMA power allocation factor.

Suggested Citation

  • Xinjie Wang & Min Zhang & Enyu Li & Guang Yang & Xuhu Wang, 2025. "Physical layer security of multi-antenna relay assisted NOMA networks," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 88(1), pages 1-13, March.
  • Handle: RePEc:spr:telsys:v:88:y:2025:i:1:d:10.1007_s11235-024-01239-x
    DOI: 10.1007/s11235-024-01239-x
    as

    Download full text from publisher

    File URL: http://link.springer.com/10.1007/s11235-024-01239-x
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.

    File URL: https://libkey.io/10.1007/s11235-024-01239-x?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Wided Hadj Alouane, 2021. "Physical layer security for cooperative NOMA networks via Nakagami-m fading channels," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 78(4), pages 531-538, December.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.

      Corrections

      All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:spr:telsys:v:88:y:2025:i:1:d:10.1007_s11235-024-01239-x. See general information about how to correct material in RePEc.

      If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

      If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

      If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

      For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.springer.com .

      Please note that corrections may take a couple of weeks to filter through the various RePEc services.

      IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.